Fastening eor books



'unrTE sTATEs PATENT orTToE.

SYLVESTER M. PYE, OF ACQUACKANOCK, NEW JERSEY.

FASTENING FOR DOORS.

` Specication of Letters Patent No. 5,492, dated March 28, 1848.

To aZZ whom t may concern:

Be it known that L'SYLvnsTER PTE, of Acquackanock, in the county ofPassaic and State of New Jersey, have invented a new and usefulImprovement in Door-Locks; and I do hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawings, making part of this my specification, inwhich- Figure 1, represents a view of the various sections of my lock,and Fig. 2 of the lock entire and in working order as will more fullyand at large appear.

The numbers and letters upon t-he sectional drawing correspond withthose on the entire drawing; similar parts being represented by similarletters and numbers.

No. 1, is the latch or slide, made at its extreme end like the latch o-rslide of an ordinary door lock, but shorter at its interior end, andhaving no permanent connection with the door knob.

No. 2, is the detached slide, of size corresponding to No. 1, andattached to the door knob by claws, as seen in Fig. 2, or by any knownmethod of communicating the mot-ion of the door knob to the slide latch.

No. 3 is the coupling or attaching lever and is made of thin metal orother material.

No. 4f is the elevating slide, and is also composed of thin sheet metalor other material.

In combining these various separate parts into a door lock, a cast-ironlock-case is provided, or one of any other material and known form nowin use, having a knob and lever as seen at c Fig. 2, and a key-hole andkey of any form as seen at 7c Fig. 2, and an opening in its end for thepassage of the slide latch No. l. A spring of any known construction isalso attached to the case as seen at b Fig. 2, and a fixed stub or wireof short length as seen atZ Fig. 2. Also proper permanent stubs orelevations on the inner face of the lock-case to keep in place theworking parts thereof. Nos. 1 and 2 are first placed into thislock-case, having their interior ends meeting each other, as seen inFig. 1, at n., n', and the extreme or latch end of No. 1, projectingthrough the opening in the lock case made for that purpose; and theremaining end of No. 2, attaching itself to the knob-lever or othermoving apparatus, and held there by the spring b as seen in Fig. 2. No.8 is then placed-upon Nos. 1 and 2, having the pin e passing through thehole e in its one end and the spring a resting against the upper side ofthe lock case or other fixed object; and the small dog g projectinginwardly and toward the inner face of the lock-case, and fitting intothe notch l1. in No. 2; thus tying or binding together Nos. 1, and 2 bythe pin e and the notch and dog 71, and g. No. 4 is then placed over andupon the other parts, having the pins4 e and f passing through theoblong slits d, Z and having the dog z' fitting into the notch j. Aproper Covering is then placed over the whole and the lock is ready foruse; the manner of which is as follows: The key is introduced at k andbeing turned in the direction indicated by the arrow Fig. 2, comes intocontact with the coupling lever No. 3 at le and between the jaws of theelevating slide No. 4, j y'. The couplinglever is thus raised up; andhaving a vibratory-motion about the pin e of No. 1, the dog g is liftedout ofthe notch L thus detaching the slide latch No. 1 from theknob-slide No. 2. By the same motion of the key the elevator slide ispushed forward in the direction of the Inotion of the key until theshoulder/m. is brought under the dog z' which thus prevents the couplinglever from again descending as it'otherwise would do by the force of thespring a and attaching the two parts of the slide latch Nos. 1 and 2.The shoulder Z No. 3 is, by the same operation of the key brought upagainst the fixed stub Z so that the slide latch No. 1, cannot be drawnback into the lock case without breaking some part of the lock, by theapplication of external force. In this situation the lever No. 3 iselevated until the shoulder Z bears against the pin Z; the slide No. 4Lis so far forward toward the latch end of the bolt that the pins e and fare at the back ends of the slits d Z and the dog z' rests upon thenotch or shoulder m. The lock is then fast and the key may be withdrawn.

The process' of unfastening is the converse of the process of lockingalready described. Byy turning the key back again the various parts ofthe lock are restored to that position represented in Fig. 2, the dog iis in the notch y' and the dog g in the notch L thus coupling togetherthe two detached ends of the slide into one united whole.

struction and combination o the slide-latch articular `conv No. l, thedetached slide No. 2, the coupling lever No. 8, and the elevating slideNo. 4, with the common lock case, as more minutely herein described toaccomplish that object. I disclaim the knob, knoblever, slide-latch,key, spring for pressin out the slide latch, and the lock case or ShelS. M. PYE.

Witnesses:

SIMEON PYE, EDW. N. DIoKERsoN.

